Funding for this research was provided by:
Dementia Research Centre UCL, London, UK
Eisai Limited and Pfizer Limited (Provided medication and matching placebo free of charge)
Received: 7 September 2017
Accepted: 26 February 2018
First Online: 1 May 2018
Ethics approval and consent to participate
: The study was reviewed and approved by the London Queen Square Research Ethics Committee (REC), London, UK (REC reference 03/N025).
: Each participant received an information sheet in which the intention to publish results was described with no identifiable information. Each participant signed a consent confirming that they have read and agreed to the information provided in the information sheet.
: The study received a grant from Eisai Limited and Pfizer Limited. Eisai Limited and Pfizer Limited provided the study medication and matching placebo free of charge. The authors declare there they have no competing interests.
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